Turntable



May 8, 1928. 1,669,124

H. F. GRAVES TURNTABLE Filed April 28, 1927 2 Sheets-Sheet 1 gInWHE'G'rat/es I a ike: we

Patented May 8, 1928. I

UNITED'STATES] HARRY F. canvas, or esnrInLn, nnsjsncnnsn'r'rs.

TURNTABLE.

Application filed April as, 1927. Serial 1%. 187,258.

This invention relates to turn-tables, such as generally constructed forreversing and switching locomotive engines, and provides a novel lockingmeans vfor holding the device in the ,desiredadjusted position when itis required to release the structure. preliminary to turning the same tomeet existing conditions. a H The invention contemplates a .steel frameset in the wall of theturntable pit opposite each of the tracksconnecting with thesaid pit, a lock bolt at each end of the turntable,

-. an operating lever for each ofthe lock bolts,

and a system of bell cranks and connections between each of theoperating levers and a lock bolt, both operating levers being con-vveniently positioned to be actuated from the operators cab, or otherdeterminate point.

While the drawings illustrate a preferred embodiment of the invention,it is to be understood that in adapting the means to meet specific needsand requirements, the de sign may be varied and such other changes inthe minor details of construction may be,

resorted to within the scope of the invention as claimed, withoutdeparting from the spirit thereof. 3

For a full understanding of the invention and the merits thereof,reference is to be had to the following description and the drawingshereto attached, in which,-

Figure 1 is a top plan view of a turntable embodying the invention.

Figure 2 is a vertical, approximately central sectional view thereof.

Figure 3 is an enlarged sectional view on the line 33 of Figure 1,looking in the direction of the arrows. v

Figure 4 is a fragmentary elev'ational view of an operating lever andassociated parts.

Corresponding and like parts are referred to in the followingdescription and designated in the several views of the drawings by likereference characters.

The numeral 1 designatesthe turntable which may be of any approvedconstruction and 2 is the pit in which the turntable is mounted. Theusual circular track 3, in conjunction with the pivot 1, supports theturntable in a manner well operators cab 5 is located at one end of theturntable and to one side of the track thereon. A plurality of tracks 6lead from the pit and are adapted to connect with the understood. The Itrack carried by the turntable in a manner well understood. I I c In.accordance with the invention the wall.

ofthe pit-2 is provided with an opening op-- posite the end of each ofthetracksfi and is adapted to receive a steel frame '7. which 'forms asocket to receive a/lock bolt 8. There is provided a lock bolt Sat eachend I of the turn-table and these look bolts are adapted to ,coact withthe reinforcedsockets 7 to secure the turntable in'the require-d ad.-

justed position. A box or casing 9 mounted upon each end of theturn-table receives the" lock bolt 8 which operates.therethrough andreceives a coil spring 10 arranged to hold.

the lock bolt in engagement with the socket into which it has-beenprojected upon oper ating the lever. A post 11 is attached to thesubstructure of the turn-table and constitutes a mount for a bell crank12. It is understood that a post 11' isrprovidedffor' each end of theturntable. A wire .13, or,

other suitable connection, joins an arm of each of the bell cranks 12with the cooperating lock bolt 8. Other posts 14 are arranged at oneside of'the turntable and attached to the substructure thereof andsupport bell cranks 15. A wire, or connection, i

16. joins the other armof the bell crank 12 with an arm of therespective bell cranks 15. Two operating levers 17 are located at oneend of the turntable so as to be readily accessible to the operator foractuation when it is required to release the turntable preliminary toshifting. the same, as required. The operating levers 17 are disposedwith in convenient reach of the operators cab, 5. Each of the levers 17is provided with the usual hand latch 18 and a notch bar 19 whereby tohold the levers when moved to a position to withdraw the lock bolts 8from engagement with the wall of the pit, thereby admitting of theturntable being rotated in the accustomed way. A wire 20, or otherpreferred connection, joins the other arm of each of the bell cranks 15with an operating lever 17 and in this manner both of the lock bolts maybe releasedfrom a given point which, as shown, is preferably adja centthe operators cab 5.

table.

of locking mechanisms may be actuated from the operators cab, therebysaving time and insuring the functioning of both look ng mechanisms atall times.

The steel frames 7 are set into the wall of the pit when constructingthe same. The

springs 9 do not project the bolts 8 but hold them projected when shotinto the sockets by operating the levers.

Having thus described the invention, I claim:

1. In combination with a turntable and its pit, of a locking member ateach end of the turntable adapted to engage the wall of the pit. a bellcrank at each end otthe turntable and having an arm connected with thelocking member, a second bell crank at the side'of the turntable andhaving an arm connected with the other arm of the first men- 'tionedbell crank,'juxtaposed operating levers adjacent an end of the turntableand a connection between each of the operating levers and the other armof the respective bell cranks mounted at a side of the turn- 2. Thecombination with a turntable and its pit, of lock bolts at the ends ofthe turntable, posts secured to the said structure of the turntable anddisposed some distance from the ends thereof, bell cranks mounted uponsaid posts, connecting means between the lock bolts and an arm of thebell crank,

other posts at a side of the turntable and secured to the substructurethereof, bell cranks mounted upon the last mentioned posts, connectingmeans between an arm of the side bell cranks and the other arm of thefirst mentioned bell crank, juxtaposed operating levers adjacent an endof the turnstructure of the turntable a distance from each end thereof,bell cranks mounted upon the side posts, connecting means between an armof the bell crank at the side of the turntable and the other arm of thecenter bell cranks, juxtaposed operating levers adjacent an end of theturntable, and connecting means between the respective operating leversand the other arms of the respective side bell cranks.

In testimony whereof I afiix my signature.

HARRY F. GRAVES. [1 5.]

